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PCF8574T (SOP-16-300mil) — Symbol, Footprint IPC-7351B & 3D STEP Model

PCF8574T

HGSEMIID: C398075SOP-16-300mil · 16 Pins · Pitch 1.27mmIPC TOLERANCE VARIATION5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · PCF8574T (SOP-16-300mil)1A02A13A24P05P16P27P38VSS16VDD15SDA14SCL13INT12P711P610P59P4Grid Pitch = 2.54mm (IEEE-315)-15.2-10.2-5.105.110.215.215.210.25.10-5.1-10.2-15.2mm
2. 2D FOOTPRINT
12345678910111213141516E=7.50mm · Pitch e=1.27mmD=10.30mm-8-6-4-20246886420-2-4-6-8mm
3. 3D CAD MODEL
Package Body: 7.50mm × 10.30mm · Pitch: 1.27mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (16/16)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1A0I/OMultiplexed I/O & Peripheral Pin A0 (General)
2A1I/OMultiplexed I/O & Peripheral Pin A1 (General)
3A2I/OMultiplexed I/O & Peripheral Pin A2 (General)
4P0I/OMultiplexed I/O & Peripheral Pin P0 (General)
5P1I/OMultiplexed I/O & Peripheral Pin P1 (General)
6P2I/OMultiplexed I/O & Peripheral Pin P2 (General)
7P3I/OMultiplexed I/O & Peripheral Pin P3 (General)
8VSSGNDGround Reference Pin (VSS)
9P4I/OMultiplexed I/O & Peripheral Pin P4 (General)
10P5I/OMultiplexed I/O & Peripheral Pin P5 (General)
11P6I/OMultiplexed I/O & Peripheral Pin P6 (General)
12P7I/OMultiplexed I/O & Peripheral Pin P7 (General)
13INTI/OMultiplexed I/O & Peripheral Pin INT (General)
14SCLI/OMultiplexed I/O & Peripheral Pin SCL (I2C)
15SDAI/OMultiplexed I/O & Peripheral Pin SDA (I2C)
16VDDPowerPower Supply Input (VDD — 2.5 to 6 V)
PIN 1 A0
I/O
Multiplexed I/O & Peripheral Pin A0 (General)
Design note: addressinput0
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 6 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen
Open PDF in New Window ↗Read Datasheet PDF (.pdf)
PDF VIEWEROfficial Datasheet Document: PCF8574T (HGSEMI · SOP-16-300mil)
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
PCF8574T (SOP-16-300mil) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
PCF8574T (SOP-16-300mil) - 2. Standard Pinout (Top View)
True package pinout (16 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
PCF8574T (SOP-16-300mil) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
PCF8574T (SOP-16-300mil) - 4. Package Dimensions (D×E×A)
SOP-16-300mil · 7.50×10.30mm · Pitch 1.27mmExpand ›
5. Recommended Land PatternLAND PATTERN
PCF8574T (SOP-16-300mil) - 5. Recommended Land Pattern
IPC-7351B Footprint (16 Pads)Expand ›
6. Application SchematicSCHEMATIC
PCF8574T (SOP-16-300mil) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (6 figures · Page 1/1)
Showing 1–6 of 6 uncropped original figures for PCF8574
P1 · p01_fig012553×1473px
PCF8574T (SOP-16-300mil) — Fig.1 Block diagram (SOT38-1 and SOT162-1).
Fig.1 Block diagram (SOT38-1 and SOT162-1).
P2 · p02_fig012898×1588px
PCF8574T (SOP-16-300mil) — Fig.2 Pin configuration (DIP16).
Fig.2 Pin configuration (DIP16).
P2 · p02_fig01P2
PCF8574T (SOP-16-300mil) — Datasheet Page 2 (p02_fig01)
Datasheet Page 2 (p02_fig01)
P6 · p06_fig011122×3136px
PCF8574T (SOP-16-300mil) — 6 2018 AUG http://www.hgsemi.com.cn
6 2018 AUG http://www.hgsemi.com.cn
P6 · p06_fig01P6
PCF8574T (SOP-16-300mil) — Datasheet Page 6 (p06_fig01)
Datasheet Page 6 (p06_fig01)
P12 · p12_fig012888×1141px
PCF8574T (SOP-16-300mil) — Fig.15 I2C-bus timing diagram.
Fig.15 I2C-bus timing diagram.

Technical Specifications & Part Details (PCF8574T)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Standard Electronic & Interconnect Component
Detailed Overview:PCF8574T (SOP-16-300mil) is a 16-pin standard electronic & interconnect component featuring a 10.30 × 7.50 × 2.50 mm mechanical envelope (lead pitch e = 1.27 mm). Rated for 2.5 to 6 V supply operation across -40°C ~ +85°C (Industrial Grade) with integrated I2C interfaces.
Operating Supply VoltageV_CC / V_DD
2.5 to 6 V
Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins
Ambient Operating TemperatureT_A
-40°C ~ +85°C (Industrial Grade)
Industrial temperature grade; T_J(max) = +125°C
Clock / RF Operating Frequencyf_CLK / f_RF
100 kHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
Observe per-pin absolute maximum current limits
Package Envelope (D × E × A)D × E × A
10.30 × 7.50 × 2.50 mm (A1=0.00 mm)
Package family: SOP (SOP-16-300mil)
Pin Count & Lead PitchN / e
16 Pins | Pitch e = 1.27 mm (50.0 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
I2C
Cross-linked with 4D Pinout & Schematic Symbol
Reflow & Moisture SensitivityIPC / MSL
IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3
60% windowed solder paste stencil on thermal EPAD
Engineering Safety Alert: Verify Pin-1 chamfer orientation on Top Silkscreen prior to SMT pick-and-place assembly.
Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.

5-Point Standards Verification

Automated compliance checks prior to export
5/5 PASS
IEEE-315 Symbol16 auto-grouped pins
OK
IPC-7351B Land Pattern16 pads · Pitch 1.27mm
OK
IPC-7525 60% Solder PasteReflow 1:1 Standard
OK
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
OK
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
OK

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet
5.00 PCB Verified

Mechanical Dimensions & Land Pattern (SOP-16-300mil)

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
10.30 × 7.50 mm
Height (A) & Pitch (e)IPC-7351B
A=2.10mm · e=1.27mm
Pad Size (W × L)Level B
0.60 × 1.90 mm
Pins / Total PadsTopology
16P / 16Pad (DUAL_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives
DFM READY
Designator / Replacement MPNValue / PackageFunction & PCB Layout Rule
N/A
BOM
Per application circuit
SOP-16-300mil
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — PCF8574T (SOP-16-300mil)

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats
IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of PCF8574T (SOP-16-300mil)?

Manufactured by HGSEMI, the PCF8574T is housed in a SOP-16-300mil package with 16 pins and a 1.27 mm lead pitch, supporting a VCC supply range of 2.5 to 6 V. Key pins include: 1 (A0: Multiplexed I/O & Peripheral Pin A0 (General)), 2 (A1: Multiplexed I/O & Peripheral Pin A1 (General)), 3 (A2: Multiplexed I/O & Peripheral Pin A2 (General)), 4 (P0: Multiplexed I/O & Peripheral Pin P0 (General)), 5 (P1: Multiplexed I/O & Peripheral Pin P1 (General)), 6 (P2: Multiplexed I/O & Peripheral Pin P2 (General)).

What are the IPC-7351B PCB Footprint dimensions for PCF8574T?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), PCF8574T (SOP-16-300mil) has a nominal body envelope of 7.50 × 10.30 mm, pitch e = 1.27 mm, and 16 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for PCF8574T?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for PCF8574T (HGSEMI, SOP-16-300mil) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.

Static Reference Appendix: Pinout Table (16 pins) & PCF8574 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1A0Digital_IOSignal terminal A0 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: A0. Supported peripheral buses: General.
2A1Digital_IOSignal terminal A1 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: A1. Supported peripheral buses: General.
3A2Digital_IOSignal terminal A2 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: A2. Supported peripheral buses: General.
4P0Digital_IOSignal terminal P0 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P0. Supported peripheral buses: General.
5P1Digital_IOSignal terminal P1 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P1. Supported peripheral buses: General.
6P2Digital_IOSignal terminal P2 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P2. Supported peripheral buses: General.
7P3Digital_IOSignal terminal P3 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P3. Supported peripheral buses: General.
8VSSGND0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks.
9P4Digital_IOSignal terminal P4 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P4. Supported peripheral buses: General.
10P5Digital_IOSignal terminal P5 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P5. Supported peripheral buses: General.
11P6Digital_IOSignal terminal P6 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P6. Supported peripheral buses: General.
12P7Digital_IOSignal terminal P7 (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: P7. Supported peripheral buses: General.
13INTDigital_IOSignal terminal INT (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: INT. Supported peripheral buses: General.
14SCLDigital_IOSignal terminal SCL (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: SCL. Supported peripheral buses: I2C.
15SDADigital_IOSignal terminal SDA (I/O, 2.5 to 6 V domain). Multiplexed alternate functions: SDA. Supported peripheral buses: I2C.
16VDDPower_InPrimary positive power supply input (VDD) operating in the 2.5 to 6 V domain (Max rating: 6.0V).
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